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Contents distribution system, method thereof, server, user terminal, encryption device, managing device and streaming deviceRelated Patent Categories: Information Security, Prevention Of Unauthorized Use Of Data Including Prevention Of Piracy, Privacy Violations, Or Unauthorized Data Modification, Access ControlContents distribution system, method thereof, server, user terminal, encryption device, managing device and streaming device description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060005258, Contents distribution system, method thereof, server, user terminal, encryption device, managing device and streaming device. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE PRESENT INVENTION [0001] 1. Field of the Present Invention [0002] The present invention relates to a contents distribution system, a method thereof, a server, a user terminal, an encryption device, a managing device, and a streaming device, for enabling the minimization of the effect of communication charge and communication time at the time of distributing large-capacity contents, and charging in accordance with viewing time of the contents. [0003] 2. Description of the Related Art [0004] In recent years, with development, etc. of the Internet technology and a moving picture compression technology, services for distributing and selling large-capacity contents such as moving picture data to a user terminal via the Internet have been provided. Generally, in such services, digital contents, such as moving picture data, are in many cases stored in a server on the Internet, so as to be distributed in response to a request from a user terminal. [0005] However, when large-capacity contents, such as a moving picture data are distributed and sold by means of a portable radio terminal which is a portable communication apparatus, such as a portable telephone or PDA (Personal Digital Assistant), a user must bear a greater burden of communication charge and communication time by using a mobile network such as a portable telephone communication network than a charge for the contents, as a result of which such services are made impractical. [0006] In order to cope with the problem, there has been proposed a method for individually distributing encrypted contents data and encryption keys of the encrypted contents in Japanese Patent Application laid open No. 2003-229843. [0007] Also, in Japanese Patent Application laid open No. 2003-6734, there has been proposed a technique, wherein an automatic vending machine comprises means for receiving encrypted contents data from a server, while a portable terminal comprises means for receiving the encrypted contents data from the automatic vending machine and means for receiving key data for decrypting from the server, and the server comprises means for performing charging at the time of transmitting the key data to the portable terminal, and thereby, in the case of downloading large-capacity digital contents, charge collection is performed while reducing a load imposed on a user. SUMMARY OF THE PRESENT INVENTION [0008] However, the above described prior art has the following problems. [0009] For individually distributing encrypted contents data and encryption key for the encrypted contents, the contents and encryption key need to be individually downloaded using independent procedures, which makes user's procedure complicated. In addition, there is a problem in which the contents themselves are not made into streams, thereby making charging in accordance with viewing time difficult, whereas traffic is extremely reduced in the case where fixed encryption keys are distributed and sold in order to avoid a high increase in the use's communication charge due to the increase of traffic caused by performing stream distribution of contents themselves, as a result of which a business interest on the side of communications carriers cannot be aroused. [0010] It is therefore an object of the present invention to provide a contents distribution system, a method thereof, a server, a user terminal, an encryption device, a managing device, and a streaming device, for enabling large capacity contents, such as a moving picture, to be acquired and viewed inexpensively based on charging in accordance with viewing time only, and also a communication charge to be limited to a charge for acquiring an encryption key, thereby substantially reducing the communication charge. [0011] In accordance with the first aspect of the present invention, there is provided a contents distribution system including a server and a user terminal which are connected via a network, wherein the server comprises: an acquisition section for acquiring contents information; an encryption section for encrypting contents information acquired by the acquisition section; an encrypted contents storage for storing contents information encrypted by the encryption section; and an encryption key storage for making encryption key information used for encrypting by the encryption section into a stream and storing the encryption key information, the user terminal comprises: a first communication section for receiving the encrypted contents information from the server via a first network; a second communication section for receiving the encryption key information made into a stream from the server via a second network having a speed lower than the first network; and a decryption section for decrypting the encrypted contents information received by the first communication section using the encryption key information received by the second communication section. [0012] In accordance with the second aspect of the present invention, in the contents distribution system of the first aspect, the server further comprises a transmission measuring section for measuring the state of transmission of the encryption key information so as to enable the user terminal to receive the encryption key information by the second communication section. [0013] In accordance with the third aspect of the present invention, in the contents distribution system of the second aspect, the transmission measuring section measures transmission time and/or the number of transmissions of the encryption key information to the user terminal. [0014] In accordance with the fourth aspect of the present invention, in the contents distribution system of any one of the first to third aspects, the server further comprises a charging processing section for calculating use charge based on the encrypted contents information and/or the encryption key information, each information being received by the user terminal via the network. [0015] In accordance with the fifth aspect of the present invention, in the contents distribution system of any one of the first to fourth aspects, the user terminal further comprises a display for displaying the encrypted contents information decrypted by the decryption section. [0016] In accordance with the sixth aspect of the present invention, in the contents distribution system of any one of the first to fifth aspects, the server further comprises: a generation section for generating partial contents information which is contents information acquired by the acquisition section and which is not encrypted by the encryption section; and a partial contents information disclosing section for enabling the non-encrypted partial contents information generated by the generation section to be disclosed and viewed by the user terminal. [0017] In accordance with the seventh aspect of the present invention, in the contents distribution system of any one of the first to sixth aspects, the server further comprises an encryption key location information disclosing section for enabling information on location where the encryption key information is stored by the encryption key storage to be disclosed and viewed by the user terminal. [0018] In accordance with the eighth aspect of the present invention, there is provided a server comprising: an acquisition section for acquiring contents information; an encryption section for encrypting contents information acquired by the acquisition section; an encrypted contents storage for storing contents information encrypted by the encryption section; an encryption key storage for making encryption key information used for encrypting by the encryption section into a stream and storing the encryption key information; and a communication section for transmitting the encrypted contents information via a first network, and transmitting the encryption key information made into a stream via a second network having a speed lower than the first network. [0019] In accordance with the ninth aspect of the present invention, the server of the eighth aspect further comprises a transmission measuring section for measuring the state of transmission of the encryption key information by the communication section. [0020] In accordance with the tenth aspect of the present invention, in the server of the ninth aspect, the transmission measuring section measures transmission time and/or the number of transmissions of the encryption key information. [0021] In accordance with the eleventh aspect of the present invention, the server of any one of the eighth to tenth aspects further comprises a charging processing section for calculating use charge based on the encrypted contents information and/or encryption key information, each information being transmitted via the network. [0022] In accordance with the twelfth aspect of the present invention, there is provided a user terminal comprising: a first communication section for receiving encrypted contents information via a first network; a second communication section for receiving encryption key information made into a stream via a second network with a speed lower than the first network; and a decryption section for decrypting the encrypted contents information received by the first communication section using the encryption key information received by the second communication section. Continue reading about Contents distribution system, method thereof, server, user terminal, encryption device, managing device and streaming device... Full patent description for Contents distribution system, method thereof, server, user terminal, encryption device, managing device and streaming device Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Contents distribution system, method thereof, server, user terminal, encryption device, managing device and streaming device patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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